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[v2,01/10] dt-bindings: iio: adc: ad7606: Set the correct polarity

Message ID 20240920-ad7606_add_iio_backend_support-v2-1-0e78782ae7d0@baylibre.com (mailing list archive)
State New
Headers show
Series Add iio backend compatibility for ad7606 | expand

Commit Message

Guillaume Stols Sept. 20, 2024, 5:33 p.m. UTC 
According to the datasheet, "Data is clocked in from SDI on the falling
edge of SCLK, while data is clocked out on DOUTA on the rising edge of
SCLK".
Also, even if not stated textually in the datasheet, it is made clear on
the diagrams that sclk idles at high.

So the documentation is erroneously stating that spi-cpha is required, and
the example is erroneously setting both spi-cpol and spi-cpha.

Fixes: 416f882c3b40 ("dt-bindings: iio: adc: Migrate AD7606 documentation to yaml")
Fixes: 6e33a125df66 ("dt-bindings: iio: adc: Add docs for AD7606 ADC")

Signed-off-by: Guillaume Stols <gstols@baylibre.com>
---
 Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
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Patch

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
index 69408cae3db9..75334a033539 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
@@ -29,8 +29,6 @@  properties:
   reg:
     maxItems: 1
 
-  spi-cpha: true
-
   spi-cpol: true
 
   avcc-supply: true
@@ -117,7 +115,7 @@  properties:
 required:
   - compatible
   - reg
-  - spi-cpha
+  - spi-cpol
   - avcc-supply
   - vdrive-supply
   - interrupts
@@ -185,7 +183,6 @@  examples:
             reg = <0>;
             spi-max-frequency = <1000000>;
             spi-cpol;
-            spi-cpha;
 
             avcc-supply = <&adc_vref>;
             vdrive-supply = <&vdd_supply>;